The number of atoms : 33
Further explanation
Given
The chemical formula: 3Mg(OH₄)₂
Required
The number of atoms
Solution
The chemical formula of a compound shows the mole ratio and the number of each of its constituent components (number of atoms)
Usually, the ratio of the elements in a compound is indicated by their subscript number after the monoatomic or polyatomic in the compound
While the coefficient in front of the compound indicates the number of molecules
In the chemical formula 3Mg (OH₄) ₂, there are 3 molecules of Mg (OH₄) ₂, so the number of atoms of the elements:
Mg = 3
O = 3 x 2 = 6
H = 3 x 4 x 2 = 24
Total atoms = 3 + 6 + 24 = 33